Prosopagnosia is a neurological disorder characterised by the inability to recognise faces. Instead, people with prosopagnosia can only recognise people based on contexts.
Prosopagnosia is hypothesised to be caused by damage to a fold in the brain, the right fusiform gyrus. The condition can be caused by stroke, injury to the brain or neurodegenerative diseases. However, it can also be congenital, and has been observed to be more common in those with autism.
There is no cure for prosopagnosia. However, therapy is used to help the patients use other visual or verbal cues such as height and voice, and their unique mannerisms to identify people.
Sources:
https://www.healthline.com/health/face-blindness#coping
https://www.nhs.uk/conditions/face-blindness/
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